Transmission



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Patented May 11 19137 UNITED- STATES "P EN OFFICE? This invention relates to automatic speed change mechanisms and has for its object the production of a new and improved mechanism of this class.

Present change speed mechanisms of the mechanics-l type have the defect of being difllcult to control, especially in the larger sizes, but

have the advantage of providing a positive eiii-.-

cient connection between the prime mover and its load. Present change speed mechanisms of the electrical type provide facility of control, but do not provide a positive connection between the prime mover and its load, and are not as emcient as the mechanical transmissions. It is the object of this invention to provide a transmission combining the advantages and being free from the defects of both the mechanical and electrical transmissions.

More particularly stated, one of the objects of this invention is to produce a mechanism wherein the prime mover will be effectively and automatically connected to a variable load. 'This device will be particularly useful in conjunction with an internal combustion engine driven motor vehicle, and when used thereon, results in silent operation, in better acceleration, better fuel economy and creates simplified and less laborious operation of the motor vehicle under all conditions liable to means whereby the surplus actuating fluid is delivered to the power transmitting parts for the purpose of lubrication.

Another object of this invention is to provide a mechanism wherein an induction generator acts as a governor.

Another object of this invention is to provide an automatic change speed mechanism which includes, as an element of the combination, a relay which is proof against the jars and vibration ordinarily incurred by the motor'vehicle when in use.

Another object of this invention is to produce an automatic change speed mechanism having Another object as an element of the governing mechanism, a frequency and voltage responsive relay.

' Another object of this invention is to produce an automatic change speed mechanism wherein actuating'fluid is supplied to the actuating mechanism through electrically controlled valves.

Another object of this invention is to produce an automatic change speedmechanism wherein the actuating and connecting members occupy the minimum space for the power transmitted.

Another object of this invention is to provide an automatic transmission having as an element thereof, friction clutches that occupy the minimum possible space.

. Another object of this invention is to provide a new and improved brake band for automatic change speed mechanisms.

Another object of this invention is to provide foot controlled operating means. whereby the new transmission can be readily driven by anyone familiar with the present day non-automatic .drive.

Another object of my invention is toprovide electrical governing means consisting of a generator that delivers power in surges and to pro-. vide relays operated by the' current supplied by the said generator, the said relays being so constructed that they are enabled to take advantage of the hysteresis eifect caused by the said surging current.

of my invention is to provide a governor consisting of an alternating current generator and a plurality-of relays connected in series and soarranged that the varying impedance of the system caused by the operation of "the relays assists in causing progressive action of the" said relays. v

Another object of my invention is to provide means whereby the operator can control the transmission of power through the transmission from two distinct places.

Another object of my invention is'to provide an automatic transmission wherein the change of speeds/is affected by a controlling mechanism operated by fluid under pressure, to provide a reservoir of fluid under pressure for the controlling mechanism, and to provide means for maintaining the pressure of fluid in the said reservoir between predetermined limits.

'Another object of my invention is to provide in an automatic transmissioncapable of giving forward and reverse speeds and brake actions. a single control member whereby the operator can control the said speeds and brake action,

Another object of my invention is to so construct' an automatic transmission capable of giving forward and reverse speeds and brake action and ha g a single control member for controlling t e said speeds and brake action that it will be necessary at all times to cause appli cation of the brake when changing from a forward to a reverse speed or vice versa.

Another object of my' invention is to provid an automatic transmission with readily detachable means whereby it may be operated as a nonautomatibtransmiss'ion when desired.

Another object of my'invention is to provide new and improved controlling means for automatic change speed mechanism whereby the operator can at will apply brakes external to this transmission-and by further motion of this controlling means neutralize the transmission;

cal, mechanical and hydraulic connections only and is not to be used as a representation of either the exact construction or location of the parts shown.

Figure 2 is a wiring diagram which illustrates the position of the relays when my machine is in its lowest speed.

Figure 3 is a wiring'diagram which illustrates the positiomof relays'when my machine is in the second or next to the lowest speed.

Figure 4 is a wiring diagram which illustrates the positionof relays when my machine is in the third or next to thehigh speed.

Figure 5 is a wiring diagram which illustrates the position of relays when my machine is in the high speed.

Figure 6 is a wiring diagram which illustrates the position of the controller when my machine is operating as a brake.-

Figure 7 is a wiring diagram which illustrates the position of the controller when my machine is in reverse.

Figure 8 is a side view partly in section showing various parts of an automobile and my transmission as applied thereto.

Figure 9 is a view, takenin the direction of the arrow 3, of the steering wheel and the controller clamped thereto, shown in Figure 8.

Figure 10 is a section of the controller taken on the line ill-4001' Figure 11.

Figure 11 is a top view of the'controller with the cover removed.

Figure 12 is a side view. of the detent strip and its accessories shownin Figures 10 andLi-l.

Figure 13 is an enlarged side view, partly in section, of the spring and case therefor. used in -conjunction with the brakes and the novel brake lever oi the motor vehicle 'wn in Figure 8.

f Figure 14 is a section on he line ll-{M oi mm 15.. a

Figure 15 is a section taken onthe line lB-ii of Figure 14.

Figure 16 is an enlarged section 01 certain portions of my machine shown in Figure 14,

' constitutinga governor.

which cooperate to'produce generator action whichvaries with the speed or the machine, thus Figure 18 is a front view of the panel from which the dust cover has been removed showing the various portions. of the controllingmechanisms that are fastened to the panel.

Figure 19 is an enlarged vertical section of a combination check and safety valve used in conjunction with my machine, shown in its assembled position in-Figu're 18.

Figure 20 is an enlarged section of the cylinder and its adjuncts used bands in -my machine.

Figure 21 is a section taken on Figure 15.

Figure 22 is a perspective view 01 the cl tch release lever. r Y

Figure 23 is a section of the cylinder used in conjunction with' the clutch release shown in Figure 22.

Figure 24 is a vertical cross section of the clutch release lever illustrated in Figure 22. a

Figure 25 is a section taken on line 25-25 of Figure 15.

Figure 26 is a perspective view of the'transmission brake-band operating mechanism.

Figure 27 is 'a section of the brake-applying mechanism shown in Figure 26.

Figure 28 is a partial view of two portions of the brake-band shown in perspective.

Figure 29 is a section on the line 2929 oi Figure 30 and represents a portion of the brakeband and the mechanism whereby it is fastened to the case.

Figure 30 is a section on the line 30-30 of 1 Figure 29.

Figure 32 is a perspective view'of the upper cam used in conjunction with the brake-band operating mechanism. Figure 33 is a perspective view of a relay used in conjunction with the governing mechanism of my device. 4

Figure 34 is a vertical section oi the relay shown in Figure 33. This section is taken along the center line of .the core and contacts and best illustrates the construction of these parts.

Figure 35 is a perspective viewof an electrically operated valve used in conjunction with the controlling mechanism forming a portion oi this device.

Figure '36 is a vertical section of the electri-- cally operated valve shown in Figure 35'.

Figure 37 is a vertical section of an electrically operated valve used in conjunction with my device which differs somewhat from the valve illustrated in Figures 35 and 36.

Figure 38 is an enlargedarertical section of one of the clutches-shown in Figure 14.

gure 39 is a front view or the clutch housi shown in Figure'38.

Figure 40 is a front view of the pressure pla which is one of the components of the clutch illustrated in Figure 38.. v

Figure 41 is a clutch blade, another of the components of the clutch shown in Figure 38.

Figure 42 is another clutch blade, still another of the components 01 the clutch illustrated in Figure 38. Figure 43 is an enlarged section along line 43-43 oi'Figure 42. Figure 44 is the clutch driving drum. still an- Figure'l'l is a perspective. view oi the reverse for applying the brake-' the line 2 i-2| other of the oomponentsof the clutch shown in that'my invention can be briefly divided into I a four more or less distinct classes of mechanism' Figure 38.

Figure. 45 is a gear diagram.

Figure 46. is another gear diagram.

Figure 4'7 is an enlarged side view of the control pedal and its adjuncts shown in its as-' sembled position in Figure 8. a

Figure 48 is a side view of the control pedal and its adjuncts shown in Figure 47, taken from the side opposite to that shown in Figure 47.

Figure 49 is a side view partly in section of the joint used for Joining various elements of. the control pedal illustrated in Figures 47 and 48.

Figure 50 is a top view of. the control pedal illustrated in Figures 47 and 48.

Figure 51 is a top view of a master switch in the closed position. x v

Figure 52 is a side view' of the master switch showing the same in its closed position.

Figure 53 is a fragmentary side view of a portion of the master switch illustrated in Figure 52 and shows the relative positions of certain components thereof when vthe master switch is open.

Figure 54 represents a side. view of the emergency operating device used in conjunction with my transmission.

Figure 55 is a bottom view of the emergency operating device shown inFigure 54, with certain portions omitted for the purpose of clearness.

Figure 56 is a section taken on line 56-i6 of Figure 54.

Figure 57 is a partial section taken on line 51-51 of Figure 56. a

Figure 58 is a fragmentary top view partly in section of a portion of the housingof the emergency operation device and showathe location of the cams.-

Figure 59 is a cam and lever mechanisms shown in Figures 54, 55, 56 and 57.

Figure 60 is a gear diagram.

Figure 61 is a perspective view of the controller.

Figure 62 is a perspective view of certain component elements of the controller.

Figure 63 is an enlarged'side view of the entire transmission with the emergency operating mechanism in place, a portion of the side cover being broken away to show the assembly position of the master switch and its adiuncts.

Figure 64 is a section along the line 64-64 of Figure 63.

Figure 65 is a schematic diagrammatic representation similar to Figure 1, of another embodiment of my invention. This diagram illustrates the electrical mechanical and hydraulic connection only and is not to be used as a representation of.either the exact construction of the de- .vice or location of the parts shown.

Figure 66 is an enlarged view partly in section of the driving, and driven shafts shown in Figure 65, and the clutches and gears mounted thereon.

Figure 67 is a section taken along the line Figure 69 is a schematic diagrammatic representation, similar to Figure 1, of still another embodiment of my invention:

Referring more particularly. to the drawings whereih similar reference numerals'denote .sim-

ilar parts.

t Figure 1 shows my invention diagrammatically.

It will be seen from this and the other drawings perspective view of one of' thef which co-operating, produce the desired results.

These mechanisms are:-

(a) The power transmitting mechanism best, seen in Figures 1, 14, 15, 25, 38 to 48 inclusive and 80.

(b) Controlling mechanism, best seen in Figurea 1, 8-to 13 inclusive, 15, 18 to 32 inclusive,

35'. 36, 37, 47 to 53 inclusive, 61, 62 and 63.

Governing mechanism, best seen in Fig ures 1, 14, 16, 17, 18, 33 and 84.

,(d) Emergency operating mechanism, bes seen in Figures 54 to 59 inclusive and 63.

, I will now describe the schematic structure and operation ofv the power transmitting. controlling ancl governing portions of my invention, all of which is schematically illustrated in Figure 1.

i The po'wer transmittino mechanism Reference numeral irepresents my automatic transmission which consists of a case 2 adapted to suitably encas'e and support certain portions of my automatic transmission and has iournaled therein a drivingshaft 3, a first driven shaft 4, and a final driven shaft 5.

The driving shaft 3, carries slidably thereon, a

portion of a clutch 6, another portion of the said clutch I being fast to a frame I. The frame I has journaled therein an orbital shaft 8 and is loosely mounted on the driving shaft 3 and the first driven shaft 4. The driving shaft 3 has fast thereon, a driving gear 9 which latter engages with an orbital gear I ll, fast on the said shaft 8. Orbital gear ii is also fast on the said shaft 8 and engages with a driven gear l2 which is fast on the shaft 4. Said shaft 4 carries slidably thereon a portion of a clutch l3, another portion of the said.clutch I! being fast tora frame, l4. The frame i4 has rotatively mounted therein an orbital shaft l5 and is loosely mounted on the shaft 4 and the hub portion i6 of a reverse drum i! which is loosely mounted on the shaft 5. The orbital shaft l5 has fast thereon orbital gears l8, l9 and 20. The shaft 4 has fast thereon, a driving gear 2 I. "This gear 2i engages with the orbital gear i8. Orbital gear is engages with the driven gear 22, which is fast on the shaft 5. Orbital gear 20 engages with the sun gear 23 which is fastened to the reverse drum hub i6. Brake bands 24, and 26 are provided to hold stationary the housings 'I' and I4 and the rim 2! of the reverse drum i1.

Operation of the power transmitting portions From the foregoing description it will be seen that when the clutches 6 and iii are disengaged and the brake bands 24 and 25 hold the frames 'I and I4 stationary, the/brake band 26 being released, power can be transmitted from the driving shaft 3 to the first driven shaft 4 through the gears 9, iii, ii and i2 and from the first driven shaft 4 to the driven shaft 5 through the gears 2|, l8, l8 and 22. In this position the ratio of rotation of the shaft 5 to the shaft 21s determined by the reduction ratio of the gears 9, ill, ii and i2 and the gears 2i, i8, i9 and 22. This is the lowest speed forward obtainable in this transmission.

Releasing brake band 24 and engaging clutch 

